| 释义 |
road bed
基本英英例句
道床,路基顶面
名词 roadbed:
a bed supporting a roadWith the Ballastless track technology extensive used, the problem of the track on solid bed damage and rectification is paid more and more attention now.摘要随着无碴轨道技术的广泛运用，整体道床产生的病害及维修问题也越来越引起重视。 |